 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2021/ii/paper-4/31a/b/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

The standard removal of the first derivative,

y = u / x

, gives

u'' + q (x) u = 0

with

q (x) = x^{- 1} - x^{- 2}

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